SliderStyle: Slider handle's minimum position does not respect minimumValue

import QtQuick 2.1
import QtQuick.Controls 1.0
import QtQuick.Controls.Styles 1.0

Item {
  width: 200
  height: 200

  Slider {
    width: parent.width
    minimumValue: 30
    maximumValue: 100
    value: 50
    style: SliderStyle {}
  }
}